JPH09321701A - 光通信システム及び光増幅器 - Google Patents

光通信システム及び光増幅器

Info

Publication number
JPH09321701A
JPH09321701A JP8138243A JP13824396A JPH09321701A JP H09321701 A JPH09321701 A JP H09321701A JP 8138243 A JP8138243 A JP 8138243A JP 13824396 A JP13824396 A JP 13824396A JP H09321701 A JPH09321701 A JP H09321701A
Authority
JP
Japan
Prior art keywords
optical
light
signal light
amplification medium
wavelength
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP8138243A
Other languages
English (en)
Japanese (ja)
Inventor
Susumu Kinoshita
進 木下
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP8138243A priority Critical patent/JPH09321701A/ja
Priority to US08/763,102 priority patent/US6023366A/en
Priority to DE69633109T priority patent/DE69633109T2/de
Priority to EP96119965A priority patent/EP0812078B1/fr
Priority to EP04009662A priority patent/EP1439655A3/fr
Priority to DE69636708T priority patent/DE69636708T2/de
Priority to EP04009661A priority patent/EP1439654B1/fr
Priority to KR1019960070930A priority patent/KR100210969B1/ko
Priority to CN97102215A priority patent/CN1084558C/zh
Publication of JPH09321701A publication Critical patent/JPH09321701A/ja
Priority to US09/222,324 priority patent/US6259553B1/en
Priority to US09/222,323 priority patent/US6108123A/en
Priority to US09/572,854 priority patent/US6282017B1/en
Priority to US09/897,108 priority patent/US6452719B2/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/29—Repeaters
    • H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
    • H04B10/293—Signal power control
    • H04B10/294—Signal power control in a multiwavelength system, e.g. gain equalisation
    • H04B10/296—Transient power control, e.g. due to channel add/drop or rapid fluctuations in the input power
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2581—Multimode transmission
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
    • H01S3/1301—Stabilisation of laser output parameters, e.g. frequency or amplitude in optical amplifiers
    • H01S3/13013—Stabilisation of laser output parameters, e.g. frequency or amplitude in optical amplifiers by controlling the optical pumping
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/077—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
    • H04B10/0771—Fault location on the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/077—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
    • H04B10/0775—Performance monitoring and measurement of transmission parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/077—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
    • H04B10/0777—Monitoring line amplifier or line repeater equipment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/29—Repeaters
    • H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0221—Power control, e.g. to keep the total optical power constant
    • H04J14/02216—Power control, e.g. to keep the total optical power constant by gain equalization
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
    • H04J14/0241—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths
    • H04J14/0242—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON
    • H04J14/0245—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON for downstream transmission, e.g. optical line terminal [OLT] to ONU
    • H04J14/0246—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON for downstream transmission, e.g. optical line terminal [OLT] to ONU using one wavelength per ONU
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S2301/00—Functional characteristics
    • H01S2301/06—Gain non-linearity, distortion; Compensation thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067—Fibre lasers
    • H01S3/06754—Fibre amplifiers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/10007—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers
    • H01S3/10015—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers by monitoring or controlling, e.g. attenuating, the input signal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
    • H01S3/1305—Feedback control systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2210/00—Indexing scheme relating to optical transmission systems
    • H04B2210/07—Monitoring an optical transmission system using a supervisory signal
    • H04B2210/075—Monitoring an optical transmission system using a supervisory signal using a pilot tone
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2210/00—Indexing scheme relating to optical transmission systems
    • H04B2210/07—Monitoring an optical transmission system using a supervisory signal
    • H04B2210/078—Monitoring an optical transmission system using a supervisory signal using a separate wavelength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0278—WDM optical network architectures
    • H04J14/0279—WDM point-to-point architectures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0298—Wavelength-division multiplex systems with sub-carrier multiplexing [SCM]

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Optical Communication System (AREA)
  • Lasers (AREA)
JP8138243A 1996-05-13 1996-05-31 光通信システム及び光増幅器 Pending JPH09321701A (ja)

Priority Applications (13)

Application Number Priority Date Filing Date Title
JP8138243A JPH09321701A (ja) 1996-05-31 1996-05-31 光通信システム及び光増幅器
US08/763,102 US6023366A (en) 1996-05-31 1996-12-10 Optical communication system and optical amplifier
DE69633109T DE69633109T2 (de) 1996-05-31 1996-12-12 Optisches Übertragungssystem und optischer Verstärker
EP96119965A EP0812078B1 (fr) 1996-05-31 1996-12-12 Système de communication optique et amplificateur optique
EP04009662A EP1439655A3 (fr) 1996-05-31 1996-12-12 Système de transmission optique et amplificateur optique
DE69636708T DE69636708T2 (de) 1996-05-31 1996-12-12 Optisches Übertragungssystem und optischer Verstärker
EP04009661A EP1439654B1 (fr) 1996-05-31 1996-12-12 Système de communication optique et amplificateur optique
KR1019960070930A KR100210969B1 (ko) 1996-05-31 1996-12-24 광통신 시스템 및 광 증폭기
CN97102215A CN1084558C (zh) 1996-05-31 1997-01-10 光通信系统及光放大器
US09/222,324 US6259553B1 (en) 1996-05-13 1998-12-29 Optical communication system and optical amplifier
US09/222,323 US6108123A (en) 1996-05-31 1998-12-29 Optical communication system and optical amplifier
US09/572,854 US6282017B1 (en) 1996-05-31 2000-05-18 Optical communication system and optical amplifier
US09/897,108 US6452719B2 (en) 1996-05-31 2001-07-03 Optical communication system and optical amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8138243A JPH09321701A (ja) 1996-05-31 1996-05-31 光通信システム及び光増幅器

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2004153298A Division JP3917605B2 (ja) 2004-05-24 2004-05-24 光通信システム及び光増幅器

Publications (1)

Publication Number Publication Date
JPH09321701A true JPH09321701A (ja) 1997-12-12

Family

ID=15217427

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8138243A Pending JPH09321701A (ja) 1996-05-13 1996-05-31 光通信システム及び光増幅器

Country Status (6)

Country Link
US (5) US6023366A (fr)
EP (3) EP1439654B1 (fr)
JP (1) JPH09321701A (fr)
KR (1) KR100210969B1 (fr)
CN (1) CN1084558C (fr)
DE (2) DE69636708T2 (fr)

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5995276A (en) * 1996-07-04 1999-11-30 Nec Corporation Wavelength-division-multiplexing optical amplifier device and wavelength-division-multiplexing optical transmission system
JP2001053366A (ja) * 1999-06-30 2001-02-23 Nortel Networks Ltd 光学増幅器
US6271962B1 (en) 1997-07-15 2001-08-07 Samsung Electronics Co., Ltd. System of controlling wavelength division multiplexed optical amplifier and method thereof
WO2001080466A1 (fr) * 2000-04-14 2001-10-25 Fujitsu Limited Emetteur de multiplexage en longueur d'onde et procédé de commande de sortie optique pour l'émetteur de multiplexage en longueur d'onde optique
US6342958B1 (en) 1997-09-26 2002-01-29 Samsung Electronics Co., Ltd Wavelength division multiplexed transmission system and transmitting method using the same
JP2002057394A (ja) * 2000-08-14 2002-02-22 Fujitsu Ltd 光増幅装置および光増幅方法ならびに光通信システム
US6483636B1 (en) 1999-10-18 2002-11-19 Fujitsu Limited Optical amplifier
US6486989B2 (en) 1998-01-14 2002-11-26 Fujitsu Limited Optical communications terminal station, optical signal transmission method, and optical signal increasing method in wavelength multiplexing system
JP2003110179A (ja) * 2001-09-28 2003-04-11 Fujitsu Ltd 光増幅のための方法及び装置
US6574017B1 (en) 1998-01-05 2003-06-03 Nec Corporation Wavelength division multiplex transmitter
US6606189B2 (en) 2000-12-22 2003-08-12 Nec Corporation Light amplifier and light amplifying method
WO2003079584A1 (fr) * 2002-03-19 2003-09-25 Fujitsu Limited Procede et systeme pour la transmission par fibre optique a l'aide de l'amplification raman
US6721090B2 (en) 2000-12-22 2004-04-13 Nec Corporation Optically amplified gain control circuit and optically amplified gain control method
US6919987B2 (en) 1998-02-27 2005-07-19 Fujitsu Limited Light wavelength-multiplexing systems
US7034993B2 (en) 2000-06-29 2006-04-25 Mitsubishi Denki Kabushiki Kaisha Optical amplifier apparatus
JP2007501589A (ja) * 2003-05-29 2007-01-25 富士通株式会社 光信号のゲインを決定する方法及びシステム
JP3875190B2 (ja) * 2000-07-31 2007-01-31 三菱電機株式会社 波長分割多重光伝送装置
JP2008005075A (ja) * 2006-06-21 2008-01-10 Nec Corp 移動通信システム、ベースバンドサーバ及びそれらに用いる信号中継方法
JP2010177346A (ja) * 2009-01-28 2010-08-12 Nippon Telegr & Teleph Corp <Ntt> 光増幅器及び光増幅方法
WO2010107017A1 (fr) * 2009-03-19 2010-09-23 日本電気株式会社 Système d'ajustement de niveau de signal optique, appareil d'analyse d'informations et de génération de signal de commande pour ledit système, et procédé d'analyse d'informations et de génération de signal de commande
WO2010116474A1 (fr) * 2009-03-30 2010-10-14 富士通株式会社 Système de transmission optique et procédé de transmission optique
JP4635402B2 (ja) * 1999-07-09 2011-02-23 住友電気工業株式会社 光増幅器及び光増幅方法
JP2011061009A (ja) * 2009-09-10 2011-03-24 Fujitsu Ltd 光増幅装置
JP2012015966A (ja) * 2010-07-05 2012-01-19 Nippon Telegr & Teleph Corp <Ntt> ネットワーク保守・管理方法及びシステム
JP2012168292A (ja) * 2011-02-10 2012-09-06 Nikon Corp レーザ装置における電気光学変調器の調整方法、及びレーザ装置
JPWO2023037553A1 (fr) * 2021-09-13 2023-03-16

Families Citing this family (212)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6025947A (en) * 1996-05-02 2000-02-15 Fujitsu Limited Controller which controls a variable optical attenuator to control the power level of a wavelength-multiplexed optical signal when the number of channels are varied
JPH09321701A (ja) * 1996-05-31 1997-12-12 Fujitsu Ltd 光通信システム及び光増幅器
US6369938B1 (en) 1996-05-28 2002-04-09 Fujitsu Limited Multi-wavelength light amplifier
GB2314714B (en) * 1996-06-26 2000-04-05 Northern Telecom Ltd Optical amplifier modules
SE506403C2 (sv) 1996-09-13 1997-12-15 Ericsson Telefon Ab L M Transmissionssystem med återkopplad optisk förstärkare
US6128111A (en) * 1996-12-19 2000-10-03 Nortel Networks Corporation Monitoring of nonlinear effects
KR100229711B1 (ko) * 1996-12-31 1999-11-15 서평원 파장 분할 다중화 시스템의 채널 전력 제어장치
JP3860278B2 (ja) * 1997-03-13 2006-12-20 富士通株式会社 遠隔励起方式の波長多重光伝送システム
US6452701B1 (en) * 1997-03-19 2002-09-17 Fujitsu Limited Wavelength division multiplexing communications network supervisory system
JP3068500B2 (ja) 1997-04-25 2000-07-24 日本電気株式会社 光信号増幅伝送方式
JPH10303821A (ja) * 1997-04-25 1998-11-13 Nec Corp 光信号増幅伝送方式
JPH10327108A (ja) * 1997-05-23 1998-12-08 Nec Corp Ｎｂ−ｗｄｍシステムおよびｎｂ−ｗｄｍシステムの波長数設定方式
JPH10341206A (ja) * 1997-06-06 1998-12-22 Nec Corp 波長多重伝送装置
JP3542253B2 (ja) * 1997-06-19 2004-07-14 株式会社日立コミュニケーションテクノロジー 光ファイバ増幅器およびそれを用いた光伝送システム
US6222654B1 (en) 1997-08-04 2001-04-24 Lucent Technologies, Inc. Optical node system for a ring architecture and method thereof
JP3522509B2 (ja) * 1997-10-17 2004-04-26 富士通株式会社 光伝送装置及び光通信システム
SE9703000D0 (sv) * 1997-10-21 1997-08-20 Ericsson Telefon Ab L M Optical amplifier control
JP3884841B2 (ja) 1997-11-14 2007-02-21 株式会社日立コミュニケーションテクノロジー 光伝送システム及び光通信装置
JP3549716B2 (ja) * 1997-11-28 2004-08-04 日本電気株式会社 光ａｄｍ装置
KR100292334B1 (ko) * 1997-12-30 2001-07-12 서평원 더블유디엠시스템에서채널감시장치및방법
JP3779054B2 (ja) 1998-01-23 2006-05-24 富士通株式会社 可変光学フィルタ
US6275313B1 (en) * 1998-02-03 2001-08-14 Lucent Technologies Inc. Raman gain tilt equalization in optical fiber communication systems
JP3638777B2 (ja) 1998-02-04 2005-04-13 富士通株式会社 利得等化のための方法並びに該方法の実施に使用する装置及びシステム
KR19990069330A (ko) * 1998-02-06 1999-09-06 윤종용 채널당 출력파워가 일정한 광증폭기 및 이를위한 방법
EP0975103B1 (fr) * 1998-02-06 2006-08-09 Fujitsu Limited Amplificateur optique et procede de commande de la source de lumiere d'excitation dans un amplificateur optique
JP3551407B2 (ja) * 1998-02-16 2004-08-04 富士通株式会社 波長多重光伝送システム
ES2138927B1 (es) * 1998-02-27 2000-09-01 Telefonica Sa Extensor de vano optico bidireccional multicanal.
JPH11252047A (ja) * 1998-03-04 1999-09-17 Fujitsu Ltd 光波長多重システム、及びその端局
AU2984599A (en) * 1998-03-05 1999-09-20 Laser Power Corporation Coupled cavity laser source for telecommunications
JP3532759B2 (ja) * 1998-03-11 2004-05-31 富士通株式会社 Ｗｄｍ通信システムにおける中継装置及び同装置の送信レベル制御方法
US6603596B2 (en) * 1998-03-19 2003-08-05 Fujitsu Limited Gain and signal level adjustments of cascaded optical amplifiers
EP0946006B1 (fr) 1998-03-26 2001-06-27 Lucent Technologies Inc. Procédé et appareil pour contrôler la puissance optique d'un signal transmis à multiplexage de longueur d'ondes
US6580530B1 (en) * 1998-05-29 2003-06-17 Cisco Photonics Italy S.R.L. Optical communication system
JP3774066B2 (ja) * 1998-06-30 2006-05-10 富士通株式会社 光通信システム及びその光信号制御方法
US6728026B2 (en) * 1998-07-14 2004-04-27 Novera Optics, Inc. Dynamically tunable optical amplifier and fiber optic light source
DE19838788A1 (de) * 1998-08-26 2000-03-09 Siemens Ag Geregelter optischer Verstärker
US6614567B1 (en) * 1998-08-31 2003-09-02 Lucent Technologies Inc. Apparatus and method for upgrading the capacity of wavelength division multiplexed optical networks
KR100316308B1 (ko) * 1998-10-07 2002-02-19 윤종용 채널당출력파워가일정한파장분할다중화광섬유증폭기
EP0994583B1 (fr) * 1998-10-13 2001-09-12 Lucent Technologies Inc. Procédé et dispositif de contrôle de la puissance optique d'un signal de transmission optique
US6687461B1 (en) * 1998-11-04 2004-02-03 Board Of Regents, The University Of Texas System Active optical lattice filters
KR100283956B1 (ko) * 1998-11-24 2001-04-02 윤종용 채널별 출력세기가 일정한 광섬유증폭기 및 그 증폭방법
KR100416439B1 (ko) * 1998-11-24 2004-03-30 삼성전자주식회사 이득평탄도를제어하는광섬유증폭기
US6424439B1 (en) * 1998-11-24 2002-07-23 Nortel Networks Limited Wavelength division multiplexed channel tagging
FR2790160B1 (fr) * 1999-02-19 2001-05-04 Cit Alcatel Systeme de transmission regenere wdm
GB2347809B (en) * 1999-03-12 2001-06-20 Marconi Comm Ltd Signal transmission system
JP3670156B2 (ja) * 1999-03-18 2005-07-13 富士通株式会社 監視光信号を伝送するための方法、装置及びシステム
JP4204693B2 (ja) 1999-03-31 2009-01-07 三菱電機株式会社 光増幅装置
DE19917751C2 (de) * 1999-04-20 2001-05-31 Nokia Networks Oy Verfahren und Überwachungsvorrichtung zur Überwachung der Qualität der Datenübertragung über analoge Leitungen
US6801555B1 (en) * 1999-04-26 2004-10-05 Finisar Corporation Lasing semiconductor optical amplifier with output power monitor and control
US6275329B1 (en) * 1999-05-10 2001-08-14 Oni Systems Corp. Method and apparatus for amplification of an optical signal
US6215584B1 (en) * 1999-05-10 2001-04-10 Jds Uniphase Inc. Input independent tilt free actively gain flattened broadband amplifier
US6347008B1 (en) * 1999-06-14 2002-02-12 Tellium, Inc. Optical amplifier system and optical network having flattened gain and constant per channel output power
KR100326119B1 (ko) * 1999-06-23 2002-03-07 윤종용 씨드-빔을 이용한 엘-밴드 광섬유 증폭기
JP2001016170A (ja) * 1999-06-28 2001-01-19 Nec Corp 光増幅中継器およびこれを用いた出力制御方式
US6839163B1 (en) * 1999-09-01 2005-01-04 Avanex Corporation Apparatus and method for making an optical fiber amplifier
JP3803000B2 (ja) * 1999-09-28 2006-08-02 富士通株式会社 波長間光パワー偏差のモニタ方法、並びに、それを用いた光等化器および光増幅器
KR100319779B1 (ko) * 1999-12-21 2002-01-09 오길록 감시제어채널을 이용한 유도 브릴루앙 산란 억제 장치 및그 방법
US6433903B1 (en) * 1999-12-29 2002-08-13 Sycamore Networks, Inc. Optical management channel for wavelength division multiplexed systems
US6313940B1 (en) * 1999-12-31 2001-11-06 Lucent Technologies Inc. System based control of optical amplifier transmission functions
JP2001196670A (ja) * 2000-01-12 2001-07-19 Oki Electric Ind Co Ltd 光増幅器
GB0000583D0 (en) * 2000-01-13 2000-03-01 Sensor Highway Ltd Optical supply arrangement
EP1128504B8 (fr) * 2000-02-23 2009-08-12 Fujitsu Limited Amplificateur optique
US6634807B1 (en) * 2000-03-14 2003-10-21 Lucent Technologies Inc. Optical transmission system including performance optimization
JP2001268014A (ja) * 2000-03-15 2001-09-28 Nec Corp ブロック利得等化器
US6519081B2 (en) 2000-04-13 2003-02-11 Corning Incorporated Method of operating a noise-compensating gain controller for an optical amplifier
EP1273077A1 (fr) * 2000-04-13 2003-01-08 Siemens Aktiengesellschaft Procede et dispositif de regulation d'un milieu a action d'amplification, en particulier d'une fibre optique
JP3363133B2 (ja) * 2000-07-21 2003-01-08 住友電気工業株式会社 波長多重分割伝送方法およびそのシステム
JP2002040495A (ja) * 2000-07-21 2002-02-06 Sumitomo Electric Ind Ltd ラマン増幅器
GB2366925A (en) * 2000-09-13 2002-03-20 Marconi Comm Ltd Power control and equalisation in an optical WDM system
US6311581B1 (en) * 2000-09-21 2001-11-06 Chao-Jen Hsieh Automatic optical fiber stripping machine with stripping length control means
US6900931B1 (en) * 2000-10-02 2005-05-31 Ciena Corporation Three-stage optical amplifier having flat spectral gain
AU2002210878A1 (en) * 2000-10-10 2002-04-22 Trellis Photonics Ltd. Method, device, and system, for multiple order amplitude modulation of an optical signal, and demodulation thereof
US6804464B2 (en) * 2000-11-01 2004-10-12 Dowslake Microsystems Corporation Flexible and low cost wavelength management for optical networking
US6441950B1 (en) * 2000-11-03 2002-08-27 Onetta, Inc. Distributed raman amplifier systems with transient control
US7274880B2 (en) * 2000-11-16 2007-09-25 Tyco Telecommunications (Us) Inc. Raman assisted EDFA system and method
US6542287B1 (en) * 2000-12-12 2003-04-01 Onetta, Inc. Optical amplifier systems with transient control
US6621625B1 (en) 2000-12-13 2003-09-16 Avanex Corporation Optical node including three-stage optical amplifier with automatic gain and level control
KR100358115B1 (ko) * 2000-12-14 2002-10-25 한국전자통신연구원 자동 이득 제어된 광섬유 증폭 장치
JP4388705B2 (ja) * 2001-01-31 2009-12-24 富士通株式会社 光増幅器
JP3768110B2 (ja) * 2001-02-22 2006-04-19 富士通株式会社 光増幅器
US6906854B1 (en) * 2001-03-16 2005-06-14 Tyco Telecommunications (Us) Inc. System and method for controlling noise in raman amplifiers
US6535330B1 (en) 2001-03-31 2003-03-18 Corning Incorporated Dynamic controller for a multi-channel optical amplifier
JP4188573B2 (ja) * 2001-04-09 2008-11-26 株式会社日立製作所 光増幅器の増幅帯域拡大方法、光増幅器、及び増設ユニット
JP3786584B2 (ja) * 2001-04-20 2006-06-14 富士通株式会社 波長多重用光増幅器の特性測定方法および特性測定システム
JP3826726B2 (ja) * 2001-04-25 2006-09-27 日本電気株式会社 光出力装置の保護装置並びにそれを用いた光伝送システム及び光出力装置の保護方法
US6600596B2 (en) 2001-05-09 2003-07-29 Ciena Corporation Method and system for controlling amplifier power in an optical communications network having add/drop capability
WO2002091027A2 (fr) * 2001-05-09 2002-11-14 Ciena Corporation Procede et systeme de regulation de puissance d'amplificateur dans un reseau de communication optique dote d'une fonction d'insertion-extraction
US6614589B2 (en) 2001-05-09 2003-09-02 Ciena Corporation Method and system for controlling amplifier power in an optical communications network
US6690506B2 (en) 2001-05-17 2004-02-10 Corning Incorporated Control architecture and method for optical amplifiers
US6943937B2 (en) 2001-05-17 2005-09-13 Avanex Corporation Optical amplifier performance controller and method of use
JP2002358378A (ja) * 2001-06-01 2002-12-13 Fujitsu Ltd 店舗管理システム
US6751014B2 (en) * 2001-06-19 2004-06-15 International Business Machines Corporation Automatic gain control and dynamic equalization of erbium doped optical amplifiers in wavelength multiplexing networks
JP2003007697A (ja) * 2001-06-21 2003-01-10 Hitachi Kokusai Electric Inc 半導体装置の製造方法、基板処理方法および基板処理装置
WO2003001706A1 (fr) * 2001-06-22 2003-01-03 Tellabs Operations, Inc. Systeme et procede de mesure de l'intensite des signaux optiques achemines dans une liaison optique
JP4651231B2 (ja) * 2001-07-26 2011-03-16 富士通株式会社 光伝送システム
US6388802B1 (en) 2001-07-31 2002-05-14 Seneca Networks Reduction of ASE in WDM optical ring networks
US6421168B1 (en) 2001-07-31 2002-07-16 Seneca Networks Reduction of ASE in WDM optical ring networks
JP4569064B2 (ja) * 2001-09-27 2010-10-27 住友電気工業株式会社 光送信機及び波長分割多重伝送システム
JP2003124881A (ja) * 2001-10-15 2003-04-25 Fujitsu Ltd 光伝送装置および光伝送システム
GB0130214D0 (en) * 2001-12-18 2002-02-06 Cit Alcatel Supervisory signalling for optical communications equipment
JP3986824B2 (ja) * 2001-12-28 2007-10-03 富士通株式会社 光フィルタの制御方法及び制御装置並びに光ノード装置
US7058301B2 (en) 2002-02-28 2006-06-06 Bosloy Jonathan L Apparatus and method for planned wavelength addition and removal in a wavelength division multiplexed system
US7042634B2 (en) * 2002-03-14 2006-05-09 Nippon Telegraph And Telephone Corporation Optical amplifier
US20040028323A1 (en) * 2002-03-27 2004-02-12 Bennett Kevin W Telemetry add/drop module
US6917731B2 (en) * 2002-03-27 2005-07-12 Corning Incorporated Optical amplification module
US20030185485A1 (en) * 2002-03-27 2003-10-02 Bennett Kevin W. Optical processing module
US20030185483A1 (en) * 2002-03-27 2003-10-02 Bennett Kevin W. Optical monitoring and access module
US20030223683A1 (en) * 2002-03-27 2003-12-04 Bennett Kevin W. Modular optical amplifier assembly
US6937385B2 (en) * 2002-03-27 2005-08-30 Avanex Corporation Customer interface module
US20030184846A1 (en) * 2002-03-27 2003-10-02 Bennett Kevin W. Modular optical amplifier assembly and a method of assembly
US20040017602A1 (en) * 2002-03-27 2004-01-29 Bennett Kevin W. Modular optical amplifier assembly with self identifying modules
WO2003083623A2 (fr) * 2002-03-28 2003-10-09 Celion Networks, Inc. Appareil et procede destines a l'agregation et au transport de formats de donnees a orientation de structures de trames plesiosynchrones
WO2003084082A2 (fr) 2002-03-29 2003-10-09 Celion Networks, Inc. Systeme de transmission optique a terminaux repartis
US7164692B2 (en) 2002-04-08 2007-01-16 Jeffrey Lloyd Cox Apparatus and method for transmitting 10 Gigabit Ethernet LAN signals over a transport system
US6965738B2 (en) * 2002-04-16 2005-11-15 Eiselt Michael H Chromatic dispersion compensation system and method
AU2003241308A1 (en) * 2002-04-22 2003-11-03 Celion Networks, Inc. Automated optical transport system
JP3833564B2 (ja) 2002-04-24 2006-10-11 富士通株式会社 ラマン増幅を用いた光ファイバ伝送のための方法及び装置
US6847678B2 (en) * 2002-04-25 2005-01-25 Raytheon Company Adaptive air interface waveform
US8494372B2 (en) * 2002-04-30 2013-07-23 Pivotal Decisions Llc Apparatus and method for optimizing optical and electrical filtering of optical signals
WO2003094398A1 (fr) * 2002-04-30 2003-11-13 Celion Networks, Inc. Architecture de systeme de transport optique pour connexion de terminal distant
US7206516B2 (en) * 2002-04-30 2007-04-17 Pivotal Decisions Llc Apparatus and method for measuring the dispersion of a fiber span
US7711271B2 (en) * 2002-04-30 2010-05-04 Eiselt Michael H Wave division multiplexed optical transport system utilizing optical circulators to isolate an optical service channel
US7460296B2 (en) * 2002-04-30 2008-12-02 Pivotal Decisions Llc Compensation for spectral power tilt from scattering
US6606191B1 (en) 2002-05-13 2003-08-12 Corning Incorporated Method for controlling performance of optical amplifiers
US6920277B2 (en) 2002-06-04 2005-07-19 Marvin R. Young Optical bypass method and architecture
WO2003103187A1 (fr) 2002-06-04 2003-12-11 Celion Networks, Inc. Flexible, dense line card architecture
US20050226630A1 (en) * 2003-06-03 2005-10-13 Celion Networks Inc. Optical bypass method and architecture
US7603042B2 (en) * 2002-06-04 2009-10-13 Eiselt Michael H Apparatus and method for optimum decision threshold setting
US20040042067A1 (en) * 2002-06-04 2004-03-04 Eiselt Michael H. Apparatus and method for duplex optical transport using a co-directional optical amplifier
US7924496B2 (en) * 2002-06-04 2011-04-12 Pivotal Decisions Llc Apparatus and method for Raman gain control
US7460745B2 (en) * 2002-06-04 2008-12-02 Pivotal Decisions Llc Configurable dispersion compensation trimmer
US7440164B2 (en) * 2002-06-04 2008-10-21 Pivotal Decisions Llc Apparatus and method for Raman gain spectral control
US6721091B2 (en) * 2002-06-13 2004-04-13 Tyco Telecommunications (Us) Inc. System and method for controlling optical amplifier pumps
EP1385277B1 (fr) * 2002-07-22 2005-06-08 Agilent Technologies, Inc. - a Delaware corporation - Transmission de données de surveillance dans un système de communication optique
US20040027384A1 (en) * 2002-08-12 2004-02-12 Gilbert Levesque End-to-end tracing of wavelength parameters in a wavelength division multiplexing span of a fiber optic network
JP4359035B2 (ja) 2002-11-21 2009-11-04 富士通株式会社 光中継器
US7421207B2 (en) 2002-12-13 2008-09-02 Pivotal Decisions Llc Single fiber duplex optical transport
US7782778B2 (en) * 2002-12-24 2010-08-24 Samir Satish Sheth Apparatus and method for fibre channel distance extension embedded within an optical transport system
US7656905B2 (en) 2002-12-24 2010-02-02 Samir Sheth Apparatus and method for aggregation and transportation of gigabit ethernet and other packet based data formats
JP2004221968A (ja) * 2003-01-15 2004-08-05 Fujitsu Ltd 光伝送方式
KR100526502B1 (ko) * 2003-05-21 2005-11-08 삼성전자주식회사 반도체 광증폭기 모듈
US6898347B2 (en) * 2003-05-30 2005-05-24 Intel Corporation Monitoring power in optical networks
DE10335419A1 (de) * 2003-08-02 2005-02-17 Marconi Communications Gmbh Wellenlängenselektive optische Signalverarbeitungsvorrichtung
FR2859054B1 (fr) * 2003-08-19 2006-12-29 Cit Alcatel Controle dynamique de perte de puissance dans une fibre optique par contrapropagation d'un canal de supervision
US7042657B2 (en) * 2003-08-28 2006-05-09 Board Of Regents The University Of Texas System Filter for selectively processing optical and other signals
US7702030B2 (en) * 2003-12-17 2010-04-20 Mindspeed Technologies, Inc. Module to module signaling with jitter modulation
JP4340567B2 (ja) * 2004-03-17 2009-10-07 富士通株式会社 端局装置、光出力パワーの制御方法及び光出力パワー制御プログラム
US20050249505A1 (en) * 2004-05-10 2005-11-10 Richard Manderscheid Spectral tilt measurement system and method for an optical medium
US7526201B2 (en) * 2004-06-25 2009-04-28 Tyco Telecommunications (Us) Inc. Optical fiber transmission system with noise loading
CN100390585C (zh) * 2004-07-13 2008-05-28 杭州恒生普维光电技术有限公司 光纤总线结构和光纤总线网
US7583902B2 (en) * 2004-08-10 2009-09-01 Mindspeed Technologies, Inc. Module to module signaling utilizing amplitude modulation
US7551852B2 (en) * 2004-08-10 2009-06-23 Mindspeed Technologies, Inc. Module to module signaling
US8064770B2 (en) * 2004-08-11 2011-11-22 Tyco Electronics Subsea Communications Llc System and method for spectral loading an optical transmission system
US7504610B2 (en) * 2004-09-03 2009-03-17 Mindspeed Technologies, Inc. Optical modulation amplitude compensation system having a laser driver with modulation control signals
KR100729387B1 (ko) * 2005-02-25 2007-06-15 (주)에프알텍 다채널 저밀도 파장 분할 다중화 시스템에서 반사된 광 신호 감시 장치 및 감시 방법
ATE385087T1 (de) * 2005-09-26 2008-02-15 Alcatel Lucent Verfahren zur verstärkung eines zeitvariablen optischen signals und optische verstärkungseinrichtung
US7853154B2 (en) * 2006-01-13 2010-12-14 Mindspeed Technologies, Inc. Bias circuit for burst-mode/TDM systems with power save feature
US7721012B2 (en) * 2006-01-18 2010-05-18 Mindspeed Technologies, Inc. Reprogrammable device address for a serial interface in an optic module
US7702201B2 (en) * 2006-06-08 2010-04-20 Industrial Technology Research Institute Gain flattening utilizing a two-stage erbium-based amplifier
US7822341B2 (en) * 2006-09-28 2010-10-26 Alcatel-Lucent Usa Inc. Coordination of control operations in an optical network
JP4940861B2 (ja) * 2006-09-28 2012-05-30 富士通株式会社 Ｗｄｍ光伝送システム
US8995053B2 (en) * 2006-12-28 2015-03-31 Alcatel Lucent Positive optical amplifier power transient suppression
WO2009055035A2 (fr) * 2007-10-26 2009-04-30 Mindspeed Technologies, Inc. Amplificateur à deux étages haute sensibilité
US8750341B2 (en) * 2008-01-04 2014-06-10 Mindspeed Technologies, Inc. Method and apparatus for reducing optical signal speckle
KR101623996B1 (ko) 2008-03-31 2016-05-24 마인드스피드 테크놀로지 인크 휴대형 ｌｃｏｓ／ｌｃｄ／ｄｌｐ 투사 시스템에서의 전력 소실 감소
CN101651499B (zh) * 2008-08-12 2014-04-16 华为技术有限公司 无源光网络中控制中继单元中的光放大器的方法及系统
JP5470859B2 (ja) * 2009-01-09 2014-04-16 富士通株式会社 光増幅器、制御回路、および光増幅器の制御方法
US20110274438A1 (en) * 2009-01-09 2011-11-10 Marco Fiorentino Optical engine for point-to-point communications
EP2409437A1 (fr) 2009-03-19 2012-01-25 Telefonaktiebolaget L M Ericsson (PUBL) Réglage de la puissance optique pour un canal de réseau de communication optique
US8643296B2 (en) 2010-11-22 2014-02-04 Mindspeed Technologies, Inc. Color mixing and desaturation with reduced number of converters
WO2012099166A1 (fr) * 2011-01-19 2012-07-26 株式会社ニコン Dispositif laser
JP5811546B2 (ja) * 2011-02-23 2015-11-11 富士通株式会社 光受信装置および光増幅装置
US9107245B2 (en) 2011-06-09 2015-08-11 Mindspeed Technologies, Inc. High accuracy, high dynamic range LED/laser driver
US9191102B2 (en) * 2012-03-06 2015-11-17 Adtran, Inc. Systems and methods for reducing thermal tails on optical time domain reflectometer (OTDR) measurements
CN102752025A (zh) * 2012-07-20 2012-10-24 天津工大瑞工光电技术有限公司 一种基于电力线和可见光的通信系统
US9385606B2 (en) 2012-12-03 2016-07-05 M/A-Com Technology Solutions Holdings, Inc. Automatic buck/boost mode selection system for DC-DC converter
KR20140089050A (ko) * 2013-01-02 2014-07-14 한국전자통신연구원 파장 인식 기능을 갖는 광 수신기와 이를 이용한 파장 판별장치 및 그 방법
US9094148B2 (en) 2013-05-10 2015-07-28 Nec Laboratories America, Inc. Adaptive optical amplifier for WDM systems
GB2514134B (en) * 2013-05-14 2016-05-25 Toshiba Res Europe Ltd A signal manipulator for a quantum communication system
CA2964464A1 (fr) 2014-10-14 2016-04-21 The Arizona Board Of Regents On Behalf Of The University Of Arizona Reseaux de transmission optique equilibres a multiples longueurs d'onde
US10097908B2 (en) 2014-12-31 2018-10-09 Macom Technology Solutions Holdings, Inc. DC-coupled laser driver with AC-coupled termination element
US10044328B2 (en) 2015-07-20 2018-08-07 Macom Technology Solutions Holdings, Inc. Transimpedance amplifier with bandwidth extender
WO2017096349A1 (fr) 2015-12-03 2017-06-08 The Arizona Board Of Regents On Behalf Of The University Of Arizona Sondage rapide de qualité de signal dans un réseau wdm
US9755758B2 (en) * 2016-01-13 2017-09-05 Viavi Solutions Inc. Spectral analysis using a spatial light modulator
US10539741B2 (en) * 2016-02-29 2020-01-21 Nec Corporation Optical device with optical filters and processing method of optical signals
SG10201901665XA (en) 2016-03-22 2019-03-28 Lyteloop Technologies Llc Data in motion storage system and method
CN105807534B (zh) * 2016-04-27 2018-11-09 无锡市德科立光电子技术有限公司 工作模式可选的智能化半导体光纤放大器
EP3507924A4 (fr) 2016-08-30 2020-04-08 MACOM Technology Solutions Holdings, Inc. Pilote à architecture distribuée
WO2018141681A1 (fr) 2017-02-01 2018-08-09 British Telecommunications Public Limited Company Localisation d'événement de fibre optique
WO2018166920A1 (fr) 2017-03-16 2018-09-20 British Telecommunications Public Limited Company Distribution de clé quantique dans un réseau de communication optique
GB2560564B (en) * 2017-03-16 2020-04-22 British Telecomm An intermediary communication network node for QKD and sharing the OSC channel for QKD signalling
CN111051843B (zh) 2017-07-20 2022-03-18 英国电讯有限公司 光纤
US10630052B2 (en) 2017-10-04 2020-04-21 Macom Technology Solutions Holdings, Inc. Efficiency improved driver for laser diode in optical communication
CN111279632B (zh) * 2017-10-26 2023-05-09 日本电气株式会社 光学传输设备和光学传输方法
CN111492599A (zh) 2018-01-09 2020-08-04 英国电讯有限公司 光数据传输系统
US10630416B2 (en) 2018-04-11 2020-04-21 Huawei Technologies Co., Ltd. System and method for optical channel reconfiguration
EP3804247B1 (fr) 2018-05-30 2024-08-14 MACOM Technology Solutions Holdings, Inc. Topologie de couplage en courant alternatif basée sur un circuit intégré
CA3101811A1 (fr) 2018-08-02 2020-02-06 Lyteloop Technologies, Llc Procede et appareil de stockage de signaux d'onde dans une cavite
KR102315760B1 (ko) 2018-08-10 2021-10-20 라이트루프 테크놀로지스, 엘엘씨 각도 멀티플렉싱을 사용하여 파 신호의 경로 길이를 연장하기 위한 시스템 및 방법
CN112913091A (zh) 2018-11-05 2021-06-04 利特洛普技术有限公司 使用共享的公共组件构建、操作和控制多个放大器、再生器、以及收发器的系统和方法
US11005573B2 (en) 2018-11-20 2021-05-11 Macom Technology Solutions Holdings, Inc. Optic signal receiver with dynamic control
US11558122B2 (en) * 2019-01-31 2023-01-17 Nec Corporation Optical transmission apparatus, terminal station apparatus, optical communication system, and optical communication method
TWI884203B (zh) 2020-01-10 2025-05-21 美商Ｍａｃｏｍ技術方案控股公司 收發器，用於接收及處理光學信號之方法及光學模組
US11575437B2 (en) 2020-01-10 2023-02-07 Macom Technology Solutions Holdings, Inc. Optimal equalization partitioning
US12013423B2 (en) 2020-09-30 2024-06-18 Macom Technology Solutions Holdings, Inc. TIA bandwidth testing system and method
CN112254016A (zh) * 2020-10-22 2021-01-22 中投(天津)智能管道股份有限公司 电阻抗式和分布光纤式相结合的管道监测系统及监测方法
US11658630B2 (en) 2020-12-04 2023-05-23 Macom Technology Solutions Holdings, Inc. Single servo loop controlling an automatic gain control and current sourcing mechanism
US11616529B2 (en) 2021-02-12 2023-03-28 Macom Technology Solutions Holdings, Inc. Adaptive cable equalizer
CN115514418B (zh) * 2021-06-22 2025-05-23 华为技术有限公司 一种光放大器以及光通信系统
CN117477356A (zh) * 2022-07-20 2024-01-30 华为技术有限公司 一种光学放大器、光学放大方法及光通信设备
US12567847B2 (en) 2022-12-27 2026-03-03 Macom Technology Solutions Holdings, Inc. Variable gain optical modulator with open collector driver amplifier and method of operation
US12395130B2 (en) 2022-12-27 2025-08-19 Macom Technology Solutions Holdings, Inc. Variable gain optical modulator with open collector driver amplifier and method of operation

Family Cites Families (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02184828A (ja) * 1989-01-12 1990-07-19 Toshiba Corp 半導体光増幅器
JPH03206427A (ja) * 1990-01-08 1991-09-09 Mitsubishi Electric Corp ファイバ形光増幅器
JP2787820B2 (ja) * 1990-07-20 1998-08-20 キヤノン株式会社 波長多重光通信システム及びそこで用いられる光増幅装置
JP3110805B2 (ja) * 1991-07-01 2000-11-20 富士通株式会社 光中継システム
US5225922A (en) * 1991-11-21 1993-07-06 At&T Bell Laboratories Optical transmission system equalizer
JPH05211482A (ja) * 1992-01-31 1993-08-20 Fujitsu Ltd 光増幅中継器
JP2968394B2 (ja) * 1992-06-10 1999-10-25 ケイディディ株式会社 光中継システムの監視方法および折り返し回路並びに送受信回路
JP3268605B2 (ja) * 1992-08-19 2002-03-25 日本電信電話株式会社 光増幅中継伝送システム
JPH06152034A (ja) * 1992-11-06 1994-05-31 Sumitomo Cement Co Ltd ダミー光入力制御型光ファイバ増幅方法
JPH07107990B2 (ja) 1992-11-12 1995-11-15 日本電気株式会社 Ａｔｍ方式による送信装置及び通信システム
GB2280561B (en) * 1993-07-31 1997-03-26 Northern Telecom Ltd Optical transmission system
JP2778438B2 (ja) * 1993-12-27 1998-07-23 日本電気株式会社 光増幅装置と光増幅器設計方法と光中継伝送システム
FR2715017B1 (fr) * 1994-01-13 1996-02-16 Alcatel Nv Procédé de transmission et liaison optique à multiplexage spectral avec amplification.
FR2714982B1 (fr) * 1994-01-13 1996-02-02 Alcatel Nv Amplificateur optique régulé.
JPH07212315A (ja) * 1994-01-18 1995-08-11 Fujitsu Ltd 光増幅器
JP3195160B2 (ja) * 1994-05-06 2001-08-06 株式会社日立製作所 光増幅器
US5539563A (en) * 1994-05-31 1996-07-23 At&T Corp. System and method for simultaneously compensating for chromatic dispersion and self phase modulation in optical fibers
US5513029A (en) * 1994-06-16 1996-04-30 Northern Telecom Limited Method and apparatus for monitoring performance of optical transmission systems
JPH0890597A (ja) 1994-09-20 1996-04-09 Ube Ind Ltd 射出成形機のシャットオフノズル
JP3379052B2 (ja) * 1994-09-26 2003-02-17 富士通株式会社 波長多重光増幅装置及び光波長多重伝送システム及び光波長多重伝送方法
JP3306693B2 (ja) * 1995-01-19 2002-07-24 富士通株式会社 光増幅装置，光波長多重通信システム，光端局装置及び光中継装置
JPH08248455A (ja) * 1995-03-09 1996-09-27 Fujitsu Ltd 波長多重用光増幅器
JP3618008B2 (ja) * 1995-03-17 2005-02-09 富士通株式会社 光増幅器
JPH08278523A (ja) * 1995-04-05 1996-10-22 Hitachi Ltd 光増幅装置
JP2687933B2 (ja) * 1995-06-09 1997-12-08 日本電気株式会社 光直接増幅器
JP3739453B2 (ja) * 1995-11-29 2006-01-25 富士通株式会社 光増幅器及び該光増幅器を備えた光通信システム
JPH09185091A (ja) * 1995-12-28 1997-07-15 Nec Corp 波長多重光伝送装置
JPH09321701A (ja) * 1996-05-31 1997-12-12 Fujitsu Ltd 光通信システム及び光増幅器
JP3070482B2 (ja) * 1996-07-03 2000-07-31 日本電気株式会社 波長多重光伝送用光送信装置と光受信装置
JP2904131B2 (ja) * 1996-07-04 1999-06-14 日本電気株式会社 波長多重光増幅装置と波長多重光伝送装置
US5699081A (en) * 1996-09-26 1997-12-16 Lucent Technologies Inc. Apparatus and method for automatically provisioning power on a per channel basis in a communications transmission system
JP3006519B2 (ja) * 1996-11-22 2000-02-07 日本電気株式会社 光通信システム

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5995276A (en) * 1996-07-04 1999-11-30 Nec Corporation Wavelength-division-multiplexing optical amplifier device and wavelength-division-multiplexing optical transmission system
US6271962B1 (en) 1997-07-15 2001-08-07 Samsung Electronics Co., Ltd. System of controlling wavelength division multiplexed optical amplifier and method thereof
US6342958B1 (en) 1997-09-26 2002-01-29 Samsung Electronics Co., Ltd Wavelength division multiplexed transmission system and transmitting method using the same
US6574017B1 (en) 1998-01-05 2003-06-03 Nec Corporation Wavelength division multiplex transmitter
US6823138B2 (en) 1998-01-14 2004-11-23 Fujitsu Limited Optical communications terminal station, optical signal transmission method, and optical signal increasing method in wavelength multiplexing system
US6486989B2 (en) 1998-01-14 2002-11-26 Fujitsu Limited Optical communications terminal station, optical signal transmission method, and optical signal increasing method in wavelength multiplexing system
JP2008211838A (ja) * 1998-02-27 2008-09-11 Fujitsu Ltd 波長多重分離装置及び光中継器
CN100380855C (zh) * 1998-02-27 2008-04-09 富士通株式会社 光波分复用系统
US6919987B2 (en) 1998-02-27 2005-07-19 Fujitsu Limited Light wavelength-multiplexing systems
JP2001053366A (ja) * 1999-06-30 2001-02-23 Nortel Networks Ltd 光学増幅器
JP4635402B2 (ja) * 1999-07-09 2011-02-23 住友電気工業株式会社 光増幅器及び光増幅方法
US6483636B1 (en) 1999-10-18 2002-11-19 Fujitsu Limited Optical amplifier
US7099595B2 (en) 2000-04-14 2006-08-29 Fujitsu Limited Optical wavelength multiplexing transmission apparatus and optical output control method for optical wavelength multiplexing transmission apparatus
WO2001080466A1 (fr) * 2000-04-14 2001-10-25 Fujitsu Limited Emetteur de multiplexage en longueur d'onde et procédé de commande de sortie optique pour l'émetteur de multiplexage en longueur d'onde optique
US6819875B2 (en) 2000-04-14 2004-11-16 Fujitsu Limited Optical wavelength multiplexing transmission apparatus and optical output control method for optical wavelength multiplexing transmission apparatus
US7034993B2 (en) 2000-06-29 2006-04-25 Mitsubishi Denki Kabushiki Kaisha Optical amplifier apparatus
US7057802B2 (en) 2000-06-29 2006-06-06 Mitsubishi Denki Kabushiki Kaisha Optical amplifier device
JP3875190B2 (ja) * 2000-07-31 2007-01-31 三菱電機株式会社 波長分割多重光伝送装置
JP2002057394A (ja) * 2000-08-14 2002-02-22 Fujitsu Ltd 光増幅装置および光増幅方法ならびに光通信システム
US6721090B2 (en) 2000-12-22 2004-04-13 Nec Corporation Optically amplified gain control circuit and optically amplified gain control method
US6606189B2 (en) 2000-12-22 2003-08-12 Nec Corporation Light amplifier and light amplifying method
JP2003110179A (ja) * 2001-09-28 2003-04-11 Fujitsu Ltd 光増幅のための方法及び装置
WO2003079584A1 (fr) * 2002-03-19 2003-09-25 Fujitsu Limited Procede et systeme pour la transmission par fibre optique a l'aide de l'amplification raman
JP2007501589A (ja) * 2003-05-29 2007-01-25 富士通株式会社 光信号のゲインを決定する方法及びシステム
JP2008005075A (ja) * 2006-06-21 2008-01-10 Nec Corp 移動通信システム、ベースバンドサーバ及びそれらに用いる信号中継方法
JP2010177346A (ja) * 2009-01-28 2010-08-12 Nippon Telegr & Teleph Corp <Ntt> 光増幅器及び光増幅方法
WO2010107017A1 (fr) * 2009-03-19 2010-09-23 日本電気株式会社 Système d'ajustement de niveau de signal optique, appareil d'analyse d'informations et de génération de signal de commande pour ledit système, et procédé d'analyse d'informations et de génération de signal de commande
JP2010226167A (ja) * 2009-03-19 2010-10-07 Nec Corp 光信号レベル調整システム及びこれにおける情報解析・制御信号生成装置並びに情報解析・制御信号生成方法
US8798473B2 (en) 2009-03-19 2014-08-05 Nec Corporation Optical signal level adjustment system, information analysis/control signal generation apparatus in the same system, and information analysis/control signal generation method
WO2010116474A1 (fr) * 2009-03-30 2010-10-14 富士通株式会社 Système de transmission optique et procédé de transmission optique
US8699884B2 (en) 2009-03-30 2014-04-15 Fujitsu Limited Optical transmission system and optical transmission method
JP2011061009A (ja) * 2009-09-10 2011-03-24 Fujitsu Ltd 光増幅装置
US8498045B2 (en) 2009-09-10 2013-07-30 Fujitsu Limited Optical amplifier
JP2012015966A (ja) * 2010-07-05 2012-01-19 Nippon Telegr & Teleph Corp <Ntt> ネットワーク保守・管理方法及びシステム
JP2012168292A (ja) * 2011-02-10 2012-09-06 Nikon Corp レーザ装置における電気光学変調器の調整方法、及びレーザ装置
JPWO2023037553A1 (fr) * 2021-09-13 2023-03-16
WO2023037553A1 (fr) * 2021-09-13 2023-03-16 日本電信電話株式会社 Système de transmission optique, dispositif de commande de réseau et procédé de transmission optique

Also Published As

Publication number Publication date
EP1439654A2 (fr) 2004-07-21
DE69633109T2 (de) 2005-07-28
EP1439655A3 (fr) 2005-05-04
CN1167379A (zh) 1997-12-10
EP0812078A3 (fr) 1999-03-03
KR100210969B1 (ko) 1999-07-15
EP1439654B1 (fr) 2006-11-15
US6108123A (en) 2000-08-22
US6452719B2 (en) 2002-09-17
US6282017B1 (en) 2001-08-28
DE69636708T2 (de) 2007-09-13
US6023366A (en) 2000-02-08
DE69636708D1 (de) 2006-12-28
EP1439654A3 (fr) 2005-05-04
CN1084558C (zh) 2002-05-08
US20010038488A1 (en) 2001-11-08
KR970078178A (ko) 1997-12-12
US6259553B1 (en) 2001-07-10
EP0812078B1 (fr) 2004-08-11
DE69633109D1 (de) 2004-09-16
EP0812078A2 (fr) 1997-12-10
EP1439655A2 (fr) 2004-07-21

Similar Documents

Publication Publication Date Title
US6259553B1 (en) Optical communication system and optical amplifier
US6288836B1 (en) Optical amplifier and optical communication system having the optical amplifier
JP3739453B2 (ja) 光増幅器及び該光増幅器を備えた光通信システム
US6654561B1 (en) Method and apparatus for measuring optical signal-to-noise ratio, and pre-emphasis method and optical communication system each utilizing the method
EP1461877B1 (fr) Systeme de transmission optique a l&#39;aide d&#39;amplificateurs raman comprenant un systeme de commande
JP2002229084A (ja) ラマン増幅器およびそれを用いた光伝送システム
JPH11122178A (ja) 光伝送装置及び光通信システム
US6424459B1 (en) Gain-flattening of an optical amplifier with split-band architecture
JP4549591B2 (ja) 装置
JP3217037B2 (ja) 多段光ファイバ増幅器
US6147796A (en) Method for determining transmission parameters for the data channels of a WDM optical communication system
GB2334397A (en) Controlling an optical amplifier in dependance upon the number of channels in the signal
EP1468512B1 (fr) Systeme de transmissions optiques a amplificateurs de raman comprenant un systeme de supervision
EP0943192B1 (fr) Procede et appareil destines a saturer une chaine d&#39;amplificateurs optiques afin de prevenir une suramplification d&#39;un signal multiplexe en division de longueur d&#39;onde
JP4023627B2 (ja) 光通信システム及び光増幅器
JP3917605B2 (ja) 光通信システム及び光増幅器
JP3980617B2 (ja) 光通信システム及び光増幅器
JP2714611B2 (ja) 光中継器及びそれを使った光伝送路網
US6907157B2 (en) Method and system for optical fiber transmission using raman amplification
JPH02252330A (ja) 波長多重コヒーレント光伝送方式
JP2003124891A (ja) 光増幅装置
JP2000341218A (ja) 光送受信システム、光受信装置、および光送受信方法

Legal Events

Date Code Title Description
A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20040323

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20040524

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20040622

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20040823

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20041026

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20041227

A911 Transfer to examiner for re-examination before appeal (zenchi)

Free format text: JAPANESE INTERMEDIATE CODE: A911

Effective date: 20050222

A912 Re-examination (zenchi) completed and case transferred to appeal board

Free format text: JAPANESE INTERMEDIATE CODE: A912

Effective date: 20050408